The new R1S/R1D & R2S/R2D series 1 Watt and 2 Watt SMD Miniature DC/DC Converters are available with single or dual outputs from mid January 2010.

The unique “enclosed open frame” design has the same pinout as standard SMD converters but offers an extended ambient operating temperature range of up to +100°C without derating or fan cooling. The lead free converters are fully RoHS 6/6 conform and are UL60950 and EN60601 certified.

The R1S/R1D & R2S/R2D series have been designed for fully automated manufacture, so are suitable for use with vapour phase soldering and can withstand soldering temperatures of 245°C for the maximum 30 seconds as defined by the JEDEC STD-020C standard.

Input voltages ranging from 3.3V up to 24V are standard, as are single or dual output voltages of between 3.3V and 24V or ±3.3V to ±24V, so they can be used as voltage isolators, dual-rail generators, step-up or step-down converters. Two isolation grades are available: 1KVDC or 3KVDC – the latter making them also suitable for medical applications.

The low weight of around 1 gram makes these converters particularly suitable for high vibration and mechanical shock environments – in tests they have withstood continuous 20G random vibration for over six hours. The internal design is not only thermally and environmentally optimized, the careful PCB layout means that the converters have extremely low EMC emissions and meet EN55022 Class A levels without any external components. The external filter components required for Class B compliance are also simple and 50% size and 60% cost of conventional Class B EMC filters.

Main Features:

RoHS 6/6 compatible replacement for RSS/RSD – completely lead free

-40°C to +100°C ambient, no derating (to +110°C ambient with derating)

UL certified

High performance „Enclosed Open Frame“ design

• more reliable, withstands up to 30G vibration
• * lower inrush current
• better thermal management
• low weight

Designed for fully automated manufacture

• vapour-phase solderable
• pick and- place compatible
• tape and reel packaging available

Simpler external class B filter design – 40% cost reduction

Better Performance – better prices!